<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>异常管理</title>
</head>
<body>
<h2>异常不寻常!</h2>
<h3 >异常是：<span th:text="${session.msg}"  style="color: red"></span></h3>
</body>
</html>